Operation Manual / 4 Product description / TPS44-H.. - TPS52-H..
Page 68 /
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9.7 Removing the cartridge group
Do not remove oil orifice (if present)
42196 Oil orifice in the oil inlet
To limit the oil flow rate through the bearing casing during operation (engine under load) to the
admissible values, an oil orifice is mandatory at the oil inlet of the bearing casing if the oil inlet
pressure is > 3 bar (overpressure).
If an oil orifice is fitted in the oil inlet of the bearing casing, it must not be removed.
Do not loosen screw plugs
These screw plugs must not be removed for maintenance work. If a screw
plug is loosened, the gasket can be damaged. This can result in an oil leak.
Do not loosen screw plugs.
If any screw plugs have been loosened accidentally, have these properly
fitted by an ABB Turbocharging Service Station.
Figure 23: Do not loosen screw plugs
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